Triple Aquastat Relay L8124a C Wiring

This article describes common operating problems with heating system aquastat controls and how these troubles are diagnosed and fixed.

Triple aquastat relay l8124a c wiring.

It reveals the elements of the circuit as streamlined forms as well as the power and also signal links between the gadgets. Boilers home heating steam and hot water systems modifed wiring on l8124a c l8151a triple aquastat trying to understand the wiring on my aquastat simple single zone setup. Like many before me i m trying to figure out how to connect a nest to our boiler. Need some extra eyes and advice on how to add a common wire to our current boiler setup.

Use grounding screw provided. Manuals for the honeywell l8148 series aquastat relays. Assortment of honeywell aquastat l8148e wiring diagram. See table 2 and fig.

Control case must be connected to earth ground. L8124a c multizone system l8124a c e l and m aquastat relays t87f t87f t87f l8124a r845 relay r845 relay l1 c1 c2 b2 hot pump pump pump r8184 c554 orange burner black ignition power supply. We have a triple aquastat l8148e that has 2 wire that connect to our thermostat. The l8148a e j aquastat relays are immersion type.

Terminals on these aquastat relays are approved for copper wire only. I have a l8124b triple aquastat relay installed on my boiler. Honeywell l8148a e j aquastat relays manual pdf 2002 description excerpts. A wiring diagram is a streamlined conventional photographic depiction of an electrical circuit.

Honeywell l8148a e j aquastat relay series manual controllers pdf 2001 product data installation operation manual including l8148 wiring diagrams. Has model l8124c replaced model l8124b. I tried looking for l8124b but it looks like this model number is obsolete. They are rated for switching of millivoltage loads.

I ve already attempted with the 2 wires and the nest is not holding a charge. When the thermostat is calling for heat the boiler does not come on unless i tap the side of the controller and then the burners come on. We discuss aquastat problems such as improper adjustment improper wiring and relay buzzing or failures. Refer to the insert on the inside of the aquastat relay cover or to table 1 for electrical ratings and maximum load information.

Provide disconnect means and overload protection as required. A multizone control can be provided by using a separate circulator and r845 relay for each zone. Use manufacturer instructions when wiring controlled equipment or refer to typical hookups in fig. B contacts are not powered.